Perhaps you should try some spelling variations:
"instituto pedagogico nacional" » "instituto oncologico nacional", "instituto pedagogica nacional", "instituto pedagogico tradicional", "instituto pedagogicos tradicional"
"instituto colegio nacional" » "instituto oncologico nacional", "antiguo colegio nacional", "instituto clinico nacional", "instituto coleccion nacional"
"instituto copesal nacional" » "instituto forestal nacional", "instituto hospital nacional", "instituto empresa nacional"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("instituto colegio nacional") OR ("instituto copesal nacional"))) or ("instituto pedagogico nacional"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("instituto colegio nacional") OR ("instituto copesal nacional"))) OR ("instituto pedagogico nacional"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"instituto colegio nacional\") OR (\"instituto copesal nacional\"))) or (\"instituto pedagogico nacional\"))*".
• Removing quotes may allow a broader search: (((( instituto colegio nacional ) OR ( instituto copesal nacional ))) or ( instituto pedagogico nacional ))*.